(numbers 27-28) Two concentric conducting spherical shells each have a net charge of +1 C and all charges remain at rest. The outer shell has -2 C uniformly spread on its outer surface. 27. How much charge is suspended within the central cavity (not touching the inner shell)? a) -4 C b) -3 C c) -2 C d) -1 C e) OC 28. The inner surface of the inner shell is at a potential of 0 V. The inner surface of the outer shell may be at a potential of: a) -2 V b) O V c) +2 V d) more than one of the above answers could be correct e) none of the above answers may be correct

(numbers 27-28) Two concentric conducting spherical shells each have a net charge of +1 C and all charges remain at rest. The outer shell has -2 C uniformly spread on its outer surface. 27. How much charge is suspended within the central cavity (not touching the inner shell)? a) -4 C b) -3 C c) -2 C d) -1 C e) OC 28. The inner surface of the inner shell is at a potential of 0 V. The inner surface of the outer shell may be at a potential of: a) -2 V b) O V c) +2 V d) more than one of the above answers could be correct e) none of the above answers may be correct

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Given the following system of point charges: a positive point charge +q is placed in the middle, while three negative point charges -q are placed at equal distance from each other and at equal distance R from +q. -9 R +9 -9 Given that q = 13 x 10-9 C and R = 0.6 μm find the work required to construct this system of charges.
3) Point charges q = 30 µC, q,= -20 µC, and q3 = 10 µC are located in Figure 1. A rod with length L = 2 m has a total charge q =100 µC and a uniform linear charge density 2 = 50 µC/m in Figure 2. (a) Find the potential at P in Figure 1. (b) Find the total potential energy of charge system in Figure 1. (c) Find the total potential at P in Figure 2. (k = 9×10° N×m²/C², and µ= 10-6) λ- 50 μC/m gi-30 μC Q30 μC + L = : 2 m 0.3 m 0.3 m 0.5 m 9- 10 μC P →X `0.2 m 0.2 m --- 0.2 m 0.2 m 0.3 m 0.3 m ´0.5 m 92 = -20 µC -20 μC Figure 1 Figure 2 q- 100 μC
2- Two particles have charge values of +2.0 and +5.5 μC. They are separated by 0.50 m. How much potential energy does the system have? ( ke = 8.99 × 10 9 N ⋅m 2/C 2
There are two charges → Q1 = +q and charge Q2 = +2q. From the initial point (Q), Q1 is at a distance of r and Q2 is at a distance 2r. Which charge (Q1 or Q2) will have higher electrostatic potential energy? a) Q1 b) Both will have the same energy c) Q2 d) The information given is not enough to determine
8. Two test charges are brought separately from infinity into the vicinity of a charge +Q. First, a test charge +q is brought to point A at a distance r from +Q. Next, +q is removed and a test charge +2q is brought to point B at a distance 2r from +Q. When compared with the electrostatic potential energy of the charge +Q at A, the potential of the charge +Q at Bis A) Greater. B) Cannot be determined. C) The same. D) Smaller.
Q22))The electric field in a region is given as E = A / r ^ 2. What is the potential difference between the points r = l ver = 2?A) A / 2B) A / 5C) AD) A / 3E) A / 4
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25 - Find the surface charge density on the concentric Gaussian surface of radius r = 0.45 m of an insulated conductive sphere with a radius of 0.25 m and a potential of 400 V on the surface. (ε0=8,85.10^-12 C^2/Nm^2) a) 0 B) 1.18.10^-8 C/m^3 NS) 1.41.10^-8 C/m D) 7.85.10^-9 C/m^2 TO) 1.18.10^-8 C/m
Q20))Calculate the electrical potential at a point 12 cm from the center of a properly charged disc with surface charge density σ = 1.2 nC / m² and radius 5 cm.A) 0.467 VB) 0.678 VC) 0.231 VD) 0.325 VE) 0.538 V
3) Point charges q, L = 2 m has a total charge q =100 µC and a uniform linear charge density 2 = 50 µC/m in Figure 2. (a) Find the potential at P in Figure 1. (b) Find the total potential energy of charge system in Figure 1. (c) Find the total potential at P in Figure 2. (k = 9×109 N×m²/C², and µ= 10-6) 30 μC, q--20 μC , and q 10 µC are located in Figure 1. A rod with length λ-50 μC/m Qι-30 μC 91 = 30 μC 1 + L = 2 m %3D 0.3 m 0.5 m 4-10 μC 0.3 m + 0.2 m - 0.2 m --> 0.2 m 0.2 m 0.3 m 0.3 m ´0.5 m 92 = -20 µC q2 = -20 µC -1 Figure 1 Figure 2 q- 100 μC
1. Two point charges are located on the x-axis, q1 = -e at x = 0 and q2 = te at X a. (a.) Find the work that must be done by an external force to bring point charge q3 = +e 2a. [Hint: The work W equals the difference between (i) the potential 2a and (ii) the potential energy when it is %3D from infinity to x = energy U associated with q3 when it is at x =